I think you'll find that your new varmint rifle will shoot very well right out of the box. Mine did ( a nine twist model 12 BVSS in 223) and cheap American Eagle 50 gr. tipped off the shelf varmint ammo will shoot sub MOA day in and day out. I am finding 53 grain V-Max, 52 grain A-Max and 52 grain Nosler Custom Competition HPBT shoot very well out to 200 yds and beyond with IMR8082XBR. Many here find 69 gr. Sierra Match Kings work especially well at longer ranges, although I have yet to get my hands on some.
Welcome to the club!